iOS lame編譯 arm64 armv7s armv7 x86_64 i386指令集，arm64armv7s

【轉】iOS lame編譯 arm64 armv7s armv7 x86_64 i386指令集，arm64armv7s

原文出至 http://blog.csdn.net/vieri_ch/article/details/40650467

最近升級了系統到Mac OS X 10.10 並且更新了XCode6.1和iOS 8.1

之前app用到的libmp3lame.a靜態庫，也要支援64位的模擬器(x86_64)和64位的真機(arm64）指令集。需要重新編譯

查閱了下資料，按照如下步驟，並做了些注釋和改動

1.http://sourceforge.net/projects/lame/files/lame/3.99/ 下載lame的最新版本解壓到一個檔案夾裡例如 lame，全路徑如下/Users/8wm/Desktop/lame

2.下載build的指令碼，我這裡使用的是國外一個朋友的分享

https://github.com/kewlbear/lame-ios-build

下載之後得到lame-build.sh拷貝到檔案夾/Users/8wm/Desktop/lame

3.用bbedit或者其他編輯器開啟這個指令碼，按照注釋修改

4.開啟Terminals，

輸入

cd /Users/8wm/Desktop/lame

chmod 777 lame-build.sh

sudo -s#

輸入系統密碼

./lame-build.sh

開始編譯，編譯完成之後。產生fat-lame目錄和thin-lame目錄，分別存放合并所有指令集的靜態庫，以及各指令集的靜態庫.

根據所需，copy lame.h和libmp3lame.a檔案到project裡，就可以正常使用了。

可以使用命令列，查看換個庫支援的指令集。

lipo -info libmp3lame.a

Architectures in the fat file: libmp3lame.a are: armv7 armv7s i386 x86_64 arm64

以下是build的指令碼，請注意黃色的字和注釋。

 

#!/bin/sh    make distclean    CONFIGURE_FLAGS="--disable-shared --disable-frontend"    ARCHS="arm64 armv7s x86_64 i386 armv7"    # directories  # SOURCE是下載lame源碼包，解壓後的目錄，可以把sh指令碼放到這個目錄，source改為""  SOURCE=""  # FAT是所有指令集build後，輸出的目錄，所有靜態庫被合并成一個靜態庫  FAT="fat-lame"    # SCRATCH是下載lame源碼包，解壓後的目錄，必須是絕對路徑  SCRATCH="/Users/8wm/Desktop/lame"  # must be an absolute path  # THIN 各自指令集build後輸出的靜態庫所在的目錄，每個指令集為一個靜態庫  THIN=`pwd`/"thin-lame"    COMPILE="y"  LIPO="y"    if [ "$*" ]  then      if [ "$*" = "lipo" ]      then          # skip compile          COMPILE=      else          ARCHS="$*"          if [ $# -eq 1 ]          then              # skip lipo              LIPO=          fi      fi  fi    if [ "$COMPILE" ]  then      CWD=`pwd`      echo "$CWD/$SOURCE........."      for ARCH in $ARCHS      do          echo "building $ARCH..."          mkdir -p "$SCRATCH/$ARCH"          cd "$SCRATCH/$ARCH"            if [ "$ARCH" = "i386" -o "$ARCH" = "x86_64" ]          then              PLATFORM="iPhoneSimulator"              if [ "$ARCH" = "x86_64" ]              then                  SIMULATOR="-mios-simulator-version-min=7.0"                          HOST=x86_64-apple-darwin              else                  SIMULATOR="-mios-simulator-version-min=5.0"                          HOST=i386-apple-darwin              fi          else              PLATFORM="iPhoneOS"              SIMULATOR=                      HOST=arm-apple-darwin          fi            XCRUN_SDK=`echo $PLATFORM | tr '[:upper:]' '[:lower:]'`          CC="xcrun -sdk $XCRUN_SDK clang -arch $ARCH"          #AS="$CWD/$SOURCE/extras/gas-preprocessor.pl $CC"          CFLAGS="-arch $ARCH $SIMULATOR"          CXXFLAGS="$CFLAGS"          LDFLAGS="$CFLAGS"            CC=$CC $CWD/$SOURCE/configure \              $CONFIGURE_FLAGS \                      --host=$HOST \              --prefix="$THIN/$ARCH" \                      CC="$CC" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS"            make -j3 install          cd $CWD      done  fi    if [ "$LIPO" ]  then      echo "building fat binaries..."      mkdir -p $FAT/lib      set - $ARCHS      CWD=`pwd`      cd $THIN/$1/lib      for LIB in *.a      do          cd $CWD          lipo -create `find $THIN -name $LIB` -output $FAT/lib/$LIB      done        cd $CWD      cp -rf $THIN/$1/include $FAT  fi